کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5008308 | 1461840 | 2017 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Observation and analysis of the quality factor variation behavior in a monolithic fused silica cylindrical resonator
ترجمه فارسی عنوان
مشاهده و تجزیه و تحلیل رفتار تنوع کیفیت متغیر در یک رزوناتور استوانه سیلیکا با یکنواخت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Cylindrical resonators are commonly used in Coriolis vibratory gyroscopes (CVGs), which measure angular velocity through the precession of solid waves. Quality factor and its homogeneity are critical indicators of the resonator. In this paper, we present the observation and analysis of the Q factor variation behavior around the resonator's axis of symmetry. We measured the resonator's Q factor by the amplitude frequency response (AFR), with an acoustic source for excitation and a laser Doppler vibrometer (LDV) for detection. We then theoretically analyzed the Q variation behavior based on the two-dimensional mass-spring model. The experimental results were consistent with the theoretical calculation. By comparing experimental results with numerical calculations, we showed that the nature of this Q variation was due to the fact that when the excitation direction is misaligned with principle axes, for each detection point, the vibration is the superposition of two eigen-modes, and fitting with a one-dimensional oscillator would result in repetitive errors. This work is significant for understanding the mechanism of resonator's Q factor variation behavior, as well as improving CVG's performances.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 260, 15 June 2017, Pages 81-89
Journal: Sensors and Actuators A: Physical - Volume 260, 15 June 2017, Pages 81-89
نویسندگان
Yao Pan, Tianliang Qu, Dongya Wang, Suyong Wu, Jianping Liu, Zhongqi Tan, Kaiyong Yang, Hui Luo,